Chemistry.about
News articles, periodic tables, educational resources, newsletters, and annotated links.
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收录时间:2025-04-09Omniglot
Provides an introduction to almost all alphabets and other writing systems, details of hundreds of languages, and a large collection of useful phrases and multilingual texts.
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收录时间:2025-04-03Blockchain
Blockchain.info is a utility site for the e-currency Bitcoin. The site allows you to browse the bitcoin blockchain, view currency statistics and offers a free web based online wallet.
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收录时间:2025-03-15Cern
European organization for particle physics research. Includes overview, educational resources, visit booking form and news.
http://Cern.ch/百度权重:
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收录时间:2025-03-01greenwichmeantime
Complete guide to times in every time zone in the world.
http://Wwp.greenwichmeantime.com/百度权重:
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收录时间:2025-03-30Allaboutcircuits
Online book by Tony R. Kuphaldt on dc and ac electric circuits, semiconductor devices, analog and digital circuits.
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收录时间:2025-03-30R-bloggers
A center for R users to find and read bloggers who write about the statistical programming language, R.
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收录时间:2025-03-11Sona-systems
Provides online subject pool management. Includes a list of features and customer testimonials.
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收录时间:2025-04-18- 百度权重:
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收录时间:2025-04-18 kraken
Mainly a Euro and US Dollar exchange for Bitcoin and Litecoin, but also offers markets for several other cryptocurrencies and fiat currencies.
http://www.kraken.com/百度权重:
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收录时间:2025-03-31
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